wordpress post types supports thumbnail

Step 1: In your WordPress dashboard, go to "Appearance" and then click on "Editor." Step 2: Select the theme's functions.php file on the right-hand side. Step 3: Add the following code to the end of the functions.php file:

add_theme_support( 'post-thumbnails' );

Step 4: Save the changes to the functions.php file. Step 5: Now you can use the featured image functionality in your WordPress post types.